<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        const properties = [
            "中华园,北京市,公寓",
            "华景苑,上海市,别墅",
            "新城市广场,深圳市,公寓",
            "雅居乐花园,广州市,别墅",
            "恒大城,广州市,公寓",
            "太阳花园,北京市,别墅"
        ];

        function fn() {
            let arr = properties.map(item => item.split(','))
            
            let one = arr.filter(item => item[2] === '公寓')
            let two = arr.filter(item => item[2] === '别墅')

            let arr1 = []
            one.forEach(item => arr1.push(item[0]))
            let arr2 = []
            two.forEach(item => arr2.push(item[0]))

            let obj = {
                公寓:arr1,
                别墅:arr2,
            }
            console.log(obj);
        }

        fn()
    </script>
</body>

</html>